int visual_morph_run (VisMorph *morph, VisAudio *audio, VisVideo *src1, VisVideo *src2)
{
VisMorphPlugin *morphplugin;
visual_return_val_if_fail (morph != NULL, -VISUAL_ERROR_MORPH_NULL);
visual_return_val_if_fail (audio != NULL, -VISUAL_ERROR_AUDIO_NULL);
visual_return_val_if_fail (src1 != NULL, -VISUAL_ERROR_VIDEO_NULL);
visual_return_val_if_fail (src2 != NULL, -VISUAL_ERROR_VIDEO_NULL);
morphplugin = get_morph_plugin (morph);
if (morphplugin == NULL) {
visual_log (VISUAL_LOG_ERROR,
_("The given morph does not reference any plugin"));
return -VISUAL_ERROR_MORPH_PLUGIN_NULL;
}
/* If we're morphing using the timer, start the timer. */
if (!visual_timer_is_active (morph->timer))
visual_timer_start (morph->timer);
if (morphplugin->palette != NULL)
morphplugin->palette (morph->plugin, morph->rate, audio, morph->morphpal, src1, src2);
else {
if (src1->pal != NULL && src2->pal != NULL)
visual_palette_blend (morph->morphpal, src1->pal, src2->pal, morph->rate);
}
morphplugin->apply (morph->plugin, morph->rate, audio, morph->dest, src1, src2);
visual_video_set_palette (morph->dest, visual_morph_get_palette (morph));
/* On automatic morphing increase the rate. */
if (morph->mode == VISUAL_MORPH_MODE_STEPS) {
morph->rate += (1.000 / morph->steps);
morph->stepsdone++;
if (morph->rate > 1.0)
morph->rate = 1;
} else if (morph->mode == VISUAL_MORPH_MODE_TIME) {
/**
* @todo: We might want to have a bigger type here, but long longs aren't atomic
* on most architectures, so that won't do for now, maybe when we can lock (for threading)
* we can look into that
*/
double usec_elapsed = visual_timer_elapsed_usecs (morph->timer);
double usec_morph = visual_time_to_usecs (morph->morphtime);
morph->rate = usec_elapsed / usec_morph;
if (morph->rate > 1.0)
morph->rate = 1;
}
return VISUAL_OK;
}
VisPalette *visual_bin_get_palette (VisBin *bin)
{
visual_log_return_val_if_fail (bin != NULL, NULL);
if (bin->morphing == TRUE)
return visual_morph_get_palette (bin->morph);
else
return visual_actor_get_palette (bin->actor);
}
